21041445825

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{42839}}^1$

素因数の和:42951

約数の個数: 72

約数和(自身を含む): 39363105600

約数和(自身を除く): 18321659775

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 59, 75, 111, 177, 185, 225, 295, 333, 531, 555, 885, 925, 1475, 1665, 2183, 2655, 2775, 4425, 6549, 8325, 10915, 13275, 19647, 32745, 42839, 54575, 98235, 128517, 163725, 214195, 385551, 491175, 642585, 1070975, 1585043, 1927755, 2527501, 3212925, 4755129, 7582503, 7925215, 9638775, 12637505, 14265387, 22747509, 23775645, 37912515, 39626075, 63187525, 71326935, 93517537, 113737545, 118878225, 189562575, 280552611, 356634675, 467587685, 568687725, 841657833, 1402763055, 2337938425, 4208289165, 7013815275, 21041445825]

約数ペア:

[(1, 21041445825), (3, 7013815275), (5, 4208289165), (9, 2337938425), (15, 1402763055), (25, 841657833), (37, 568687725), (45, 467587685), (59, 356634675), (75, 280552611), (111, 189562575), (177, 118878225), (185, 113737545), (225, 93517537), (295, 71326935), (333, 63187525), (531, 39626075), (555, 37912515), (885, 23775645), (925, 22747509), (1475, 14265387), (1665, 12637505), (2183, 9638775), (2655, 7925215), (2775, 7582503), (4425, 4755129), (6549, 3212925), (8325, 2527501), (10915, 1927755), (13275, 1585043), (19647, 1070975), (32745, 642585), (42839, 491175), (54575, 385551), (98235, 214195), (128517, 163725)]